21756554920

素因数分解:

$2^3\times 5^1\times {\mathrm{15937}}^1\times {\mathrm{34129}}^1$

素因数の和:50077

約数の個数: 32

約数和(自身を含む): 48956754600

約数和(自身を除く): 27200199680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 15937, 31874, 34129, 63748, 68258, 79685, 127496, 136516, 159370, 170645, 273032, 318740, 341290, 637480, 682580, 1365160, 543913873, 1087827746, 2175655492, 2719569365, 4351310984, 5439138730, 10878277460, 21756554920]

約数ペア:

[(1, 21756554920), (2, 10878277460), (4, 5439138730), (5, 4351310984), (8, 2719569365), (10, 2175655492), (20, 1087827746), (40, 543913873), (15937, 1365160), (31874, 682580), (34129, 637480), (63748, 341290), (68258, 318740), (79685, 273032), (127496, 170645), (136516, 159370)]